Improvement in lubricators



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arnNr OFFICE@ THOMAS W. GODWIN, OF PORTSMOUTH, VIRGINIA.

iMPaovEMEN-r IN LUBRICATORS.

Specification forming part of Letters Patent No. 10,560, dated November l0, 1863.

T0 all whom it may concern:

Be it known that I, THoMAs W. Gonwnv, of Portsmouth, in the county of Norfolk and State of Virginia, have invented a new and useful Improvement in Lubricators; and I do hereby declare that the following is afull and exact description thereof, reference being had to the accompanying drawing, which represents a sectional elevation of my improved lubricator, and to the letters of reference marked thereon.

rIhe object of this class of inventions is the admission of oil or heated tallow to the in tcrior of the cylinders and other parts of a steam engine, under and in spite of the pressure of the steam, in such a manner that it cannot escape during the admission of the oil. It is evident that every arrangement which would effect this object must consist of two chambers or reservoirs, with two valves so connected and operating that one valve shall always be closed to prevent the escape of the steam, while the other is open for the passage of the lubricating substance, and that these offices should be alternately performed by each valve.' There have been many modifications of this general arrangement, each proposing to obviate the difficulties in the most simple and expeditions manner, but all more or less defective, inconvenient, and ex pensive. I propose to accomplish the object by my improved lubricator, in a manner at once simple, convenient, effective, and economical of time and power.

To enable others skilled in the art to understand and use my invention, I will proceed to describe it and to specify some ofits ad vantages over all other inventions for a simi-v lar purpose.

In the accompanyingdrawing, Arepresents a combined feeding cup and stuffing-box, screwing` upon the top of a reservoir, B, by threads g g g. In the lower part of the reservoir rises a tube, E, through which the channel F communicates with the machinery which is to be lubricated, the top of the tube forming the seat 'of alower valve, C. A tube, N, also projects downward from the upper part of the cavity of the reservoir B in the same direction with the tube F, and as it were a prolongation of that tube. The tube N is provided with an interior screw, t', which receives the hollow vertical shaft C C. The shaft C C is tubular from the top to a point nea-r its bottom. The cavity L within it communicates with the cavity of the reservoir B by the apertures m m m, andV with the open feedingcup A by means of the apertures is k lo.

D is a screw-plug, moving up and down in the cavity L and opening or closing the apertures 7c k. The threads fff, by which the screw plug D moves in the tube L, run in an opposite direction to the threads t' it', by which the shaft C C is moved up and down in the tube N. rIhe lower end of the shaft C C seats upon the upper end ofthe tube F, forming a grinding-valve. I n the drawing this valve is represented as being open, and the screw-plug valve D above as closed.

The operation of an oilcup thus constructed is as follows: By turning the handle H inA one direction, the screw-plug moves down, closes the apertures ic lc and seats. The motion of the handle H is thereupon communicated to the whole shaft O C', which, held by screw-threads running in an opposite direction to those which hold the valve plug D, begins to move in an opposite direction or upward, and opens the valve C. Upon reversing the motion of the handle H the shaft C screws back again, closing the valve C. The moment O is closed, the motion of C O stops, and, if the turning of the handle H continues, the plug D rises, opening the apertures k 7c.Y

The distinction between this oil-cup and that upon which a patent was granted to me October 1863, is in the separation of the vertical shaft O from the feeding-cup A, the combination of the feedingcup A with the stuffing-box, as shown at O, and the tube E, raised in the bottom of the reservoir B, upon which seats the grindingvalve C. The object ofthe tube E is toprevent the condensed water from being fed through F to the machinery. The oil rises above the condensed water and flows into the tube F. The water may be drawn off by a cock at the bottom of thereservoir.

What I claim as new, and desire to secure by Letters Patent, is-

1. rIhe vertical shaft C C', substantially as described.

2. The tube E, in combination with the vertical shaft O C', substantially as shown and described.

THOS. W. GODWIN. 

